fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rnbqkb1r/pppp2pp/5p2/4p3/2B5/2P2N2/PPP2PPP/R1BQK2R w KQkq - 0 6 | Nxe5 | Is the move from c3 to e1 legal? | No | legality |
r1bq3r/1p1kbpNp/p1npp3/8/2P1N3/3B4/PP2QPPP/R4RK1 b - - 0 13 | h5 | Does White have any passed pawns? | No | structure |
8/5Q2/p3rPp1/1p1p1k1p/2r4P/6K1/P4PP1/8 w - - 1 37 | f3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/8/pp6/8/1P3k1p/3Pn1p1/5K2/8 w - - 0 51 | g4g3 | Is the White king in check? | Yes | check |
8/8/2b1k1p1/Bp5p/2p2P1P/2K5/8/8 b - - 5 72 | Kf5 | Are there any open files in this position? | Yes: a, d, e | files |
r1bq1rk1/ppp3pp/2n2p2/4p3/3PQP2/2P2N2/PP3PPP/R3KB1R w KQ - 0 12 | e6e5 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/1r6/2p2p2/3b1kpp/1B1Pp2P/P3P1K1/2R3P1/8 b - - 30 65 | Kg6 | Identify any White knight outposts on the board. | c5 | outposts |
5b2/8/5pp1/3p3p/1P1PpPkP/2p1P1P1/2N3K1/8 b - - 0 45 | Kf5 | What piece is on g3? | White Pawn | occupancy |
r5rk/p2n3p/1p2P1q1/2pP4/2Pb1P2/1Q3N2/PP5P/R4R1K w - - 3 30 | Rg1 | Is the g-file open, semi-open, or closed? | open | files |
5k2/R4p2/6p1/7p/4P3/7P/2K5/8 b - - 1 41 | b2c2 | What is the material balance in this position? | White is up 4 pawns of material | material |
8/8/4pb2/3p1p2/pP1P4/P1K1P3/2N1k3/8 w - - 1 65 | b5 | What piece is on b4? | White Pawn | occupancy |
r1bq1rk1/5pb1/p2p1n2/3Pp3/1PP5/N3Q3/5PPP/R4RK1 w - - 2 21 | e4f6 | Identify any White knight outposts on the board. | a5 | outposts |
2kr4/1p2p3/p5pb/qr2Pb2/2pB2p1/2P5/P4NBP/Q2RK2R b K - 7 23 | Rxd4 | What piece is on c2? | Empty | occupancy |
rnbqkbnr/pppp1ppp/8/8/5p2/2P5/PP1PP1PP/RNBQKBNR w KQkq - 0 3 | Qa4 | Are there any open files in this position? | No | files |
4k1nr/r4ppp/1pp2q2/p1b5/P1B1Pp2/1QN5/1PP3PP/2KR1R2 w k - 0 15 | e5 | Is the move from c4 to d5 legal? | Yes | legality |
4r1k1/3r2pp/3p4/1b1P1P2/Q3Bqp1/P3R3/1P2K3/8 w - - 0 38 | a6b5 | Is the White king in check? | Yes | check |
r4rk1/2q1bppp/pn1p1n2/4pP2/2b1P3/1NN1B3/1PP1B1PP/R2Q1RK1 w - - 0 15 | Bxb6 | Are there any open files in this position? | No | files |
8/4R1k1/7p/p7/P7/1P1K1PP1/7P/2q5 b - - 4 46 | e4e7 | Is the Black king in check? | Yes | check |
r5k1/pp1bppbp/3p2p1/4n2n/3NP1P1/1BP1BP2/P1P5/2KR3R b - - 0 16 | Nf6 | Are there any open files in this position? | No | files |
rn1qkbnr/pp3ppp/2p1p3/3pPb2/2PP4/2N5/PP3PPP/R1BQKBNR b KQkq - 1 5 | Bb4 | Does Black have any isolated pawns? | No | structure |
r1bq1rk1/p3b1pp/2p1pp2/2p5/1PPpN3/5N2/P4PPP/R1BQ1RK1 b - - 0 16 | Ba6 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
5rk1/3q1rp1/b6p/2R5/p3R3/5P2/PP1p1BPP/3Q2K1 b - - 1 33 | Rd8 | Are there any open files in this position? | Yes: c, e | files |
6k1/5p1p/6p1/2QN1q2/8/6PP/1P3P2/4b1K1 w - - 3 39 | Ne7+ | Is the White king in check? | No | check |
r2q1rk1/1b2bppp/p2ppn2/1p6/3BP3/PBN2P2/1PP1Q1PP/2KR3R b - - 0 13 | Bc6 | Identify any White knight outposts on the board. | None | outposts |
q4rk1/p2pQp1p/bp4p1/2p5/2P5/1P4P1/PBK1PP1P/R7 b - - 3 19 | Qe8 | Is the move from a8 to h5 legal? | No | legality |
2r2r2/3q1p1B/7Q/p1bp4/3k4/3N4/1PP2PPP/6K1 w - - 2 34 | Qf4# | What is the material balance in this position? | Black is up 5 pawns of material | material |
8/1kp3p1/1p1n1pQ1/p2p3p/P2P3P/2PN4/1P2qPPK/8 w - - 1 27 | f3 | What piece is on b2? | White Pawn | occupancy |
3R4/2K5/8/1pk5/8/8/8/8 b - - 0 90 | b4 | Is the move from c5 to e4 legal? | No | legality |
r1r3k1/1q1p1pp1/4p2p/1p2P3/8/PN3N2/1Q3PPP/3R2K1 b - - 0 22 | Qa6 | Identify any Black knight outposts on the board. | a4, c4 | outposts |
rnb1kb2/pp2ppp1/2p5/4P3/8/6p1/PPPQ1PPR/R3KBN1 b Qq - 0 11 | gxh2 | Is the move from e8 to h6 legal? | No | legality |
rn1q1rk1/3p2pp/bpp1pb2/3n4/2BPN3/5N2/PP2QPPP/R1B1R1K1 b - - 1 14 | Be7 | Are there any open files in this position? | No | files |
2rqk2r/pp3pp1/3b1n2/3p2B1/8/2p2Q1P/PPB2P2/2KRR3 b k - 1 17 | Kf8 | Identify any White knight outposts on the board. | None | outposts |
3r2k1/1q3pb1/2bpp1pp/pp6/4BP2/P1P1N1P1/1P1RQ2P/4R1K1 b - - 0 26 | Bxe4 | Is the move from c6 to d6 legal? | No | legality |
6k1/pp1b1ppp/8/1pN5/4P3/2P2Q1P/qP4P1/3r2K1 w - - 0 25 | Qxd1 | Is the move from c5 to d3 legal? | No | legality |
r1b2rk1/ppp2ppp/2nb1q2/1B6/2PP4/5N1P/P4PP1/R1BQ1RK1 b - - 0 11 | h6 | What piece is on a1? | White Rook | occupancy |
r1b4r/2Q4p/p5k1/1p6/8/8/PPP2PPP/nN4K1 w - - 1 21 | Qc6+ | Identify any White knight outposts on the board. | None | outposts |
r1b1rnk1/1p2qpp1/2p4p/p2p3n/N2P4/P2BP3/1PQ1NPPP/4RRK1 b - - 3 15 | Nf6 | Does White have any passed pawns? | No | structure |
rnb2rk1/ppp1q1bp/3p4/3Ppnp1/2P1N3/2N3B1/PP2BPPP/R2QK2R b KQ - 1 14 | Nd4 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
7Q/4P3/p4pp1/1p3pk1/8/8/PPP2qPP/7K w - - 3 36 | h4+ | Identify any White knight outposts on the board. | None | outposts |
r1b2rk1/qp3pp1/p1p1p2p/P2n4/1PN5/6P1/2Q1PPBP/R2R2K1 b - - 0 17 | Nxb4 | Does White have any isolated pawns? | No | structure |
r1bq1rk1/pp3pp1/4pb2/6NQ/3P3P/P7/5PP1/R1B1K2R b KQ - 3 16 | Qa5+ | Identify any Black knight outposts on the board. | d5 | outposts |
r1b3k1/1p1nR1p1/p5Q1/q2p2p1/5Pn1/2N5/P1P3P1/5R1K b - - 2 27 | Qxc3 | What piece is on a5? | Black Queen | occupancy |
rn1k3r/bp3Qpp/p1p2n2/4q1B1/P3P1b1/2P5/BP1N1PPP/R4RK1 w - - 1 16 | Qxg7 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
5r2/8/p2p2k1/1p1p1r1p/3B1P1P/P1R1P3/5K2/8 b - - 0 37 | h3h4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2rqr1nk/1n2b1p1/p2pPpNp/1ppN1PBP/8/6Q1/PPP3P1/2KR3R b - - 1 4 | Kh7 | Are there any open files in this position? | No | files |
2b1Br1k/4b1pp/2P5/p3p3/2Qp4/4qp2/PPR3PP/3R3K w - - 4 27 | Bd7 | Does White have any passed pawns? | Yes: c6 | structure |
2rq1rk1/1b2bppp/1p2p3/2Pp4/1n1P4/2R2N2/1B3PPP/3QRBK1 w - - 0 19 | Rb3 | Is the a-file open, semi-open, or closed? | open | files |
rnbq1rk1/pp3ppp/5n2/2bp4/3p4/2N3P1/PPP1NPBP/R1BQ1RK1 w - - 0 9 | Nxd4 | What piece is on f8? | Black Rook | occupancy |
2kr2nr/pp3ppp/8/4p3/2p1P1b1/2P5/PPK2PPP/RNB1NB1R b - - 0 2 | Bd1# | What is the material balance in this position? | White is up 6 pawns of material | material |
r2qk2r/pp1n2pp/2p1p1b1/3pPpP1/3P1P1b/1NP5/PP2B2P/R1BQ1RK1 b kq - 0 13 | h6 | Identify any Black knight outposts on the board. | None | outposts |
8/4kp1p/4pp2/PBn4b/3N1b2/5P2/1P2K2P/R7 w - - 1 33 | a6 | Is the move from a5 to c5 legal? | No | legality |
2r2q1r/1p1kbp1p/p1b1p3/2PpQ1NN/8/3R4/P4PPP/1R4K1 w - - 4 22 | Ne4 | Is the move from d3 to d2 legal? | Yes | legality |
2r2r1k/6Rp/pp6/2q5/2P2P2/3pP2P/P5P1/B1R3K1 w - - 3 32 | Rg3+ | Is the move from g2 to d1 legal? | No | legality |
5rbk/1p1P2rp/5q2/ppP2B1R/8/6N1/P2Q1PK1/8 w - - 1 42 | Kh2 | What is the material balance in this position? | Black is up 2 pawns of material | material |
6k1/5pp1/p6p/2N5/1pK5/1Qn2P2/PN3qPP/8 b - - 3 40 | a5 | What piece is on g8? | Black King | occupancy |
8/8/5p2/4p1p1/1k1pP1Pp/3P1P2/3KB1nP/8 b - - 12 7 | Ne3 | Is the a-file open, semi-open, or closed? | open | files |
r2q1rk1/2pn2pp/p2p1b2/1p1Pp3/1P1P4/P2Q4/B4PPP/R1B2RK1 w - - 1 19 | f4 | What piece is on e8? | Empty | occupancy |
r1bqk2r/ppp2ppp/2np1n2/2b5/2B1P3/2N2N2/PP3PPP/R1BQ1RK1 w kq - 0 8 | Bg5 | Is the Black king in check? | No | check |
2r3k1/2Pr2p1/1QR4p/p3p3/8/4P3/q2p1PPP/3R2K1 w - - 0 30 | h3 | Identify any Black knight outposts on the board. | b4 | outposts |
8/5p1k/6p1/1q6/2nBB3/6pP/3p1PK1/3R4 w - - 0 46 | Bf3 | Does White have any isolated pawns? | Yes: f2, h3 | structure |
3R4/pk3N2/2b1PP2/7p/2p3rP/1P2b1B1/P6K/8 b - - 6 47 | c3 | Is the move from c6 to e8 legal? | Yes | legality |
rnb1kb1r/p1q5/1pppP2n/5P2/2P4P/2NB1P2/PPQB2P1/2KR2NR b kq - 0 20 | e5e6 | What is the material balance in this position? | White is up 4 pawns of material | material |
2r3k1/pb1rnppp/1pq1p3/2p5/3P2Q1/P1P1PP2/1B4PP/2R1RBK1 b - - 0 19 | Kf8 | Identify any Black knight outposts on the board. | a5 | outposts |
8/3k3N/4pK2/4P3/8/Bb6/8/8 b - - 20 71 | Kc6 | Is the move from b3 to c4 legal? | Yes | legality |
rnb1kb1r/p2p1ppp/5n2/1p3NqP/4PpP1/3P4/PPP5/RNBQ1KR1 w kq - 1 14 | Qf3 | What piece is on g5? | Black Queen | occupancy |
r2q1rk1/pp2bppp/1n2p3/3bn3/3P1B2/2N5/PPB1QPPP/3R1RK1 w - - 0 16 | dxe5 | What piece is on e2? | White Queen | occupancy |
r1b1kb1r/pp2qppp/2p5/3p2B1/8/2P2N2/PPP2PPP/R2Q1RK1 b kq - 1 11 | Qd6 | What is the material balance in this position? | Equal | material |
3r2k1/p5pp/1p1qn3/3pR3/8/2PQ1N2/PP3PPP/6K1 w - - 1 23 | Qf5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r3r3/ppp3Q1/2nkN3/8/5b2/1P6/P1PP1PPP/5RK1 b - - 0 24 | Rxe6 | Does White have any isolated pawns? | No | structure |
rn1qkb1r/ppp1pppp/8/4N2n/2B5/2N5/PPPP1PPP/R1B1K2R w KQkq - 0 8 | Bxf7# | Identify any Black knight outposts on the board. | None | outposts |
r1b1kb1r/6pp/p1p1p3/3pn1B1/q3N3/8/P1PQB1PP/1R3RK1 w kq - 2 17 | Rxf8+ | What piece is on e8? | Black King | occupancy |
6k1/1p2rpq1/p2p4/PbpPr2p/4P1pP/2Q1R1P1/1P3PBK/4R3 b - - 2 27 | Kh8 | What piece is on e5? | Black Rook | occupancy |
r4rk1/pp4p1/2p4p/2Pp4/1P2pPbP/P1K5/8/5RR1 w - - 0 29 | e6g4 | What is the material balance in this position? | Black is up 5 pawns of material | material |
1r1b1r1k/5p1p/3Pq3/3np3/2n5/pPBN2N1/P1P4P/1K1RQR2 w - - 5 31 | Ba1 | Is the move from d3 to b4 legal? | Yes | legality |
8/6pk/4p2p/5q1P/pN6/Pn6/KP4P1/1Q6 b - - 5 41 | g6 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
1rq2r1k/6pp/p1npb3/3Np1b1/2P1Pp2/pP1Q1B2/2N2PPP/R4RK1 w - - 2 21 | b4 | What piece is on e2? | Empty | occupancy |
r1bqkbnr/ppp2ppp/2Bp4/4p3/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 4 | b5c6 | Is the Black king in check? | Yes | check |
2r2rk1/pp1nbpp1/q1p1pn1p/3p1b2/1PP5/PQ1P1NP1/1B1NPPBP/R4RK1 b - - 2 13 | Rfe8 | Identify any White knight outposts on the board. | None | outposts |
2r5/1p1k1ppp/1p2p3/3pP3/PP3P2/6P1/3K3P/RN4r1 b - - 0 24 | Rcc1 | Is the White king in check? | No | check |
rn1qr1k1/1p3pp1/1bppn2p/p3p2b/1PP4N/P1NPP1PP/1BQ2PB1/R4RK1 w - - 2 20 | Na4 | Is the Black king in check? | No | check |
r2qr1k1/1pp2pp1/p2p2bb/3N4/2P3B1/1P2P2Q/PB1K1P2/n6R w - - 0 23 | Bf6 | Identify any White knight outposts on the board. | None | outposts |
r2q2k1/2p1npp1/1p1prn1p/p3p3/P3P3/1QPPNN2/1P3PPP/3RR1K1 w - - 2 16 | h3 | Is the b-file open, semi-open, or closed? | closed | files |
2r5/1b3p1k/p5pp/Bp1q2b1/3P2P1/2P1r3/1P2NQP1/3R1RK1 b - - 8 33 | Kg8 | Is the move from e3 to g3 legal? | Yes | legality |
rnbqkb1r/ppp2ppp/5n2/3p4/3P4/P1N5/1P2PPPP/R1BQKBNR b KQkq - 2 5 | c5 | Identify any White knight outposts on the board. | None | outposts |
r1b2rk1/6pp/p2b4/1p1p3q/P2P1p2/2P2N2/1P3PPP/R1BQR1K1 b - - 0 18 | g5 | Does Black have any passed pawns? | No | structure |
2kr3r/ppp2p1p/2n1bn2/3P4/3N1R2/P1N3q1/1PP3B1/R2QK3 w Q - 0 16 | g6g3 | Is the Black king in check? | No | check |
2r1kb1r/1q1b1p1p/3ppP2/p1nN3Q/Pp1NP3/7B/1PP4P/1K2R2R b k - 0 22 | Rg8 | Does White have any passed pawns? | No | structure |
r1r5/p2qpk1p/1p3np1/3P1p2/2PNpPP1/4P2P/4Q3/1RR3K1 w - - 1 28 | g5 | Does White have any isolated pawns? | No | structure |
1k3r2/1pp2qp1/p4p2/2P1b3/1P2Q3/6P1/5P1P/r2RR1K1 b - - 2 30 | d5d1 | What is the material balance in this position? | Black is up 3 pawns of material | material |
8/7p/k5p1/1R6/7K/r5r1/8/8 w - - 7 46 | Rb6+ | Is the move from b5 to g5 legal? | Yes | legality |
6K1/4k1P1/8/8/8/8/7r/4R3 b - - 1 1 | Kd7 | Are there any open files in this position? | Yes: a, b, c, d, e, f, h | files |
r3nrk1/3nq1bp/pp1p2p1/2pP1p2/P1B5/2N1P1B1/1P1Q1PPP/1K1RR3 b - - 3 17 | b5 | Are there any open files in this position? | No | files |
r3qrk1/1p2bppp/p2p1n2/P1pPp2b/4P3/2P2N1P/1P1N1PP1/R1BQR1K1 w - - 3 14 | Nc4 | Is the move from d2 to c4 legal? | Yes | legality |
8/bK6/P7/8/3p4/3Nk3/8/8 w - - 9 9 | Kxa7 | Does White have any passed pawns? | Yes: a6 | structure |
2b1k3/2p2p2/4p3/r7/8/b2Qn3/PR1NPqPP/2K2BNR b - - 4 20 | Qe1# | Is the White king in check? | No | check |
r2qkb1r/pbp2p2/1p2pP1p/3p4/7p/3BP3/PPPN1PPP/R2QK2R w KQkq - 0 11 | Qf3 | What piece is on g2? | White Pawn | occupancy |
rn1qk2r/pp2ppb1/2p2npp/3p1b2/2P5/BP2PN2/P2PBPPP/RN1Q1RK1 w kq - 2 8 | d4 | What piece is on g5? | Empty | occupancy |
r1bq1rk1/ppp2ppp/5n2/4b3/2B5/2N1P3/PPQB1PPP/2KR3R b - - 1 12 | Qe7 | Is the move from b7 to f1 legal? | No | legality |
r2qk2r/pbpn1pb1/1p1pp2p/6p1/2PP4/2NBPNP1/PP4PP/R2Q1RK1 w kq - 2 12 | Bc2 | What is the material balance in this position? | Equal | material |
r1b2r2/3p2k1/p1p2np1/1p2p1B1/4P3/1BqR1P2/P1P2P1P/5RK1 b - - 1 19 | d1d3 | What is the material balance in this position? | Black is up 9 pawns of material | material |
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